1231122530516 has 12 divisors (see below), whose sum is σ = 2155315676640. Its totient is φ = 615318051480.

The previous prime is 1231122530503. The next prime is 1231122530549. The reversal of 1231122530516 is 6150352211321.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 60792056 + ... + 60812303.

It is an arithmetic number, because the mean of its divisors is an integer number (179609639720).

Almost surely, 2^{1231122530516} is an apocalyptic number.

It is an amenable number.

1231122530516 is a deficient number, since it is larger than the sum of its proper divisors (924193146124).

1231122530516 is a wasteful number, since it uses less digits than its factorization.

1231122530516 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121606894 (or 121606892 counting only the distinct ones).

The product of its (nonzero) digits is 10800, while the sum is 32.

Adding to 1231122530516 its reverse (6150352211321), we get a palindrome (7381474741837).

The spelling of 1231122530516 in words is "one trillion, two hundred thirty-one billion, one hundred twenty-two million, five hundred thirty thousand, five hundred sixteen".